Machine for cutting key-seats in shafting.



PATENTED AUG. 21, 1906.

K. MATHEUS.

MACHINE FOR CUTTING KEY SEATS IN SHAPTING.

APPLICATION FILED 11081.22. 1904.

2 SHEETS-SHEET 1,

Inventor,

Httomegs Witnesses PATENTED AUG. 2], 1906 I K. MATHEUS. MACHINE FOR CUTTING KEY SEATS IN SHAFTING.

PLIGATION FILED NOV. 22, 190 1.

2 SHEETS-SHEET Z.

Httom'egs 7c 7 WWW lnaentor ii i?" Witnesses v in addition to being pivotally secured be- UNITED STATES PATENT OFFICE.

KARL .\l.Al.I-llCUS, ()F MARSHALL, TEXAS.

Specification of Letters Patent.

Patented Aug. 21, 1906.

Application filed November 22, 1904 Serial No. 233,854.

To 1/! whom it *nmy concern:

Be it known that I, KARL MATI-IEUS, a eitizen of the United States, residing at Marshall, in the eounty of Harrison and State of Texas, have invented a new and useful Machine for (utting Key-Seats inv Shafting, of which the following is a specification.

This invention-relates to machines for cutting key-seats in shafting and its object is to provide a portable key-seat-cutting machine especially adapted to operate upon the driving-shafts of locomotives in key-seating eccentrics thereon.

The present invention consists of improved mechanisms for securing the machine upon;

the shaft to be operated upon, for efiecting the required rotary motion of the cuttingtool, for insuring an automatic down-feed of the rotary cutter, and for imparting a reciprocatory motion to the frame which supports the gearing for rotating the cutter to regulate the length and depth of the key-seat.

The invention further consists in providing a novel form of yoke-bearin for the drivingshaft of the mechanism to a apt the machine to be operated from either side of the shaft in which the key-seat is to be cut.

The construction and relative arrangement of the mechanism will be fully described in connection with the accompanying drawings, and its novel features and combinationsof elements will be defined in the appended claims.

In the drawings, Figure 1 is a side elevation of the machine in position upon a shaft, the latter being partly in section to show the key-seat. Fig. 2 is an end elevation. Fig. 3 is an elevation of the side of the machine opposite to that shown in Fig. 1, and Fig. 4 is a vertical section of the cutter-spindle and parts associated therewith on a slightly-enlarged scale.

The reference-numeral 1 designates a shaft in which a key-seat is to be cut and upon which the machine is to be securely clamped.

The base2 of the machine has a depending web 3, from the opposite sides of which project ears 4 and oppositel -inclined flanges 5, said flanges providing a iiim seat for the machine upon the shaft 1. The ears 4, as clearly shown in Figs. 1 and 3, are arranged in pairs on opposite sides of the base 2 and are formed with bearings to receive studs 6, projecting from the oppositely-disposed clamping-arms 7 and 8. The arms 7 and 8 tween the ears 4 are connected at one side of and the lower end of the arm 7 is formed with a threaded bearing to receive a clampingserew It), the upper end of which carries a block 11, that bears against the under surface of the shaft 1.

The upper surface of the base 2 is formed with a longitudinal guideway 12 of dovetailed form to receive the correspondinglyshaped base 13,0f a movable carriage upon which the operative mechanism is supported. The frame 14 of the carriage has projecting from one end bearings 15 and 16, within which is revolubly mounted a cutter-spindle 17. r

The main shaft 18 of the machine carries a beveled gear-wheel l9, meshing with a corresponding gear 20, mounted upon the end of the driving-shaft 21, which is supported in a yoke-bearing 22, through the arms of which the main shaft 18 extends, the bearing being capable of a movement around the shaft 18, so that the driving-shaft 21 ma be'brought to any radial position with re ation to the shaft 18, that may be required by the locaupon. The shaft 18 extends through suitable bearings in the frame 14, and upon its front end is mounted a beveled gear 23, meshing with a corresponding gear 24, fixed upon the cutter-spindle, so that said spindle is revolved by the revolution of the shaft 18, the latter being revolved through the medium of the shaft 21, which may be operated either by hand or power.

A cutting-tool 25, which is fitted within the spindle, receives its rotary motion through the mechanism just described. The down-feed of the cutting-tool is effected by the means which will now be described.

The spindle 17 is circumferentially reduced at its upper portion to form an annular shoulder 26, upon which is supported the lower end of an externally-threaded sleeve 27, the meeting faces of the shoulder 26 and lower end of the sleeve 27 being formed with ballraces to receive antifriction-balls 28. The upper end 29 of the spindle 17 is reduced and oppositely threaded to receive the nuts 30 for securing the sleeve 27 in position. The threaded sleeve 27 extends through a nut 31, supported within the bearing 15 of the frame, and is provided at its upper end with ratchetteeth 32, that are adapted to be engaged by a pawl 33, secured to the upper end of a lever the vertical center of the shaft 1 by a pin 9,-

tion or position of the shaft 1 to be operated at right angles to the main shaft 18. Upon the rear end of the shaft 42 is mounted a disk 43, having diametricall opposite peripheral projections 44, adapte to contact with the projection 41 of the lever 39 to actuate the pawl 33 twice in every revolution of the shaft 42, and thus effect an intermittent down-feed of the spindle through the intermediacy of the nut 31 and sleeve 27.

Upon the front end of the shaft 42 is mounted aworm-wheel 45, engagin worms 46 and 47 mounted upon parallel s afts 48 and 49 on opposite sides of the wheel 45, each of said shafts having mounted upon its rear end a gear 50 in mesh with a gear-wheel 51, mounted upon a shaft 52, supported centrallybetween the shafts 48 and 49. Upon the shaft 52 in rear of the gear-wheel 51 is also mounted a gear-wheel 53, that meshes with a pinion 54, mounted upon the main shaft; 18. Thus it will be seen that the shaft 42 is revolved from the main shaft '18 by means of the train of gearing described in cluding the worms 46 and 47, which engage the worm-wheel 45.

To cut a key-seat of the required uniform depth, it is necessary that the rotary cutter be reciprocated bodily longitudinally of the shaft being operated upon, and to provide for this motion an upright 55 is rigidly secured to one side of. the base 2, said upright having a longitudinal slot 56, within which is supported a slide-block 57, from which centrally projects a pin 58, said pin extending into an elongated slot 59, formed in one of the spokes c of the disk 43. The revolution of the disk 43 will cause the pin 58 to move within the slot 59, and as the support 55 is fixed the entire frame 14 and the mechanism carried thereby will be reciprocated horizontally, thus causing the cutting-tool to travel back and forth.

In order to restrain the sleeve 27 from all rotation under normal conditions, so that the intermittent turning of the nut 32 will effect down-feed of the tool, there is an L-shaped arm 60 provided, which has one terminal firmly secured, as by a bolt 61, to the bearing 15, the other terminal of which projects into a lon itudinal channel 62, formed in the threa ed sleeve, as clearly shown in Fig, 4.

From the above description it will be seen that my improved machine may be readily applied to and removed. from a shaft and is especially well adapted for application to the driving-axles of locomotives, since the ma chine may be applied to axles while the latter are in position under the locomotive and may be operated from either side of the axle.

The im rovement provides in a single compact mac ine means for revolvin the cutter mechanism for intermittently eeding the cutter downward and means for moving the mechanism to permit the required depth and length of the cut.

It should be understood that the-invention is not restricted to the exact construction here illustrated, but includes all such minor changes in form and construction as may properly fall within the scope of the invention.

Having thus described the invention, what I claim is 1. In a'machine for cutting key-seats in shafting the combination with a base having a dovetailed groove therein and means for clamping the base upon a shaft; of a carriage -movably mounted upon the base and having an integral guidewaymovably mounted within the oove, a s indle rotatably and longitudinafi movab e within the carriage, a threaded sleeve surrounding the spindle, means for causing said sleeve to move longitudinally with the spindle, a thrust-bearing interposed between the sleeve and spindle, an adjusting device rotatably mounted on and engagin the sleeve, a rocking lever, means actuate thereb for operating the adjusting device, a drive-s aft, a disk upon the carriage, 1

means operated bylthe drive-shaft for simultaneously rotating the disk and spindle, means upon the disk for actuating the lever intermittently, an upright upon the base and having a slot therein extending at right angles to the base, and a block adjustably mounted on the disk and adapted to work within the slot to reciprocate the carriage.

2. The combination with a base and means for clamping it upon a shaft; of a carriage longitudinally movable upon the base, a spindle rotatably mounted on the carriage, an

I disk and lever, and means upon the disk for reciprocating the carriage upon the base.

3. The combination with a base, means for securing it to a shaft, and a lon itudinally slotted upright upon the base; 0 a carriage slidably mounted on the base, a spindle rotatably mounted on the carriage, an adjusting means upon the s indle for moving it longitudinally indepen ently of its rotation, a ever fulcrumed upon the carriage 'for actuating the adjusting means, a cam-disk rotatably mounted on the carriage for actuating the lever intermittently, a block adjustably connected to the disk and mounted to travel within the upright, a drive-shaft, and means operated thereby for actuating the disk and lever.

4. The combination with a base, means for securing it to the shaft and a longitudinallyslotted upright upon the base; of a carriage slidahly mounted on the base, a cam-disk rota-Laoly mounted on the carriage, a block adjustably connected to the disk and mounted to travel within the upright, 21 worm-wheel rotatable with the disk, a drive-shaft, Worms operated by the shaft and engaging opposite portions of the \X'OI'IIl-Wllt-Ol, a rotatable cutter-spindle carried by the shaft, mechanism actuated by the cams on said cam-disk for ad'ustiiu the cutter-spindle longitudinally in epent lently of its rotation, and means for rotating the cutter-spindle.

In testimony that I claim the foregoing as my own I have hereto a'tl'ixed my signature in the presence of two witnesses.

KARL MATIIEUS.

Witnesses:

W. J. WOTZ, T. D. SEDBERRY. 

